Add 21/12 and 45/84
1st number: 1 9/12, 2nd number: 45/84
21/12 + 45/84 is 16/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Add the two like fractions:
147/84 + 45/84 = 147 + 45/84 = 192/84 - 192/84 simplified gives 16/7
- So, 21/12 + 45/84 = 16/7
In mixed form: 22/7
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